1 /* $OpenBSD: SYS.h,v 1.20 2023/12/10 16:45:51 deraadt Exp $ */ 2 /* $NetBSD: SYS.h,v 1.8 2003/08/07 16:42:02 agc Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 36 */ 37 38 #include "DEFS.h" 39 #include <sys/syscall.h> 40 41 42 #define SYSENTRY(x) \ 43 .weak x; \ 44 x = _thread_sys_ ## x; \ 45 ENTRY(_thread_sys_ ## x) 46 #define SYSENTRY_HIDDEN(x) \ 47 ENTRY(_thread_sys_ ## x) 48 #define __END_HIDDEN(x) \ 49 END(_thread_sys_ ## x); \ 50 _HIDDEN_FALIAS(x, _thread_sys_ ## x); \ 51 END(_HIDDEN(x)) 52 #define __END(x) \ 53 __END_HIDDEN(x); END(x) 54 55 #define SYSTRAP(x) \ 56 ldr r12, =SYS_ ## x; \ 57 97: swi 0; \ 58 PINSYSCALL(SYS_ ## x, 97b); \ 59 dsb nsh; \ 60 isb 61 62 #define CERROR __cerror 63 64 #define _SYSCALL_NOERROR(x,y) \ 65 SYSENTRY(x); \ 66 SYSTRAP(y) 67 #define _SYSCALL_HIDDEN_NOERROR(x,y) \ 68 SYSENTRY_HIDDEN(x); \ 69 SYSTRAP(y) 70 71 #define _SYSCALL(x, y) \ 72 _SYSCALL_NOERROR(x,y); \ 73 bcs CERROR 74 #define _SYSCALL_HIDDEN(x, y) \ 75 _SYSCALL_HIDDEN_NOERROR(x,y); \ 76 bcs CERROR 77 78 #define SYSCALL_NOERROR(x) \ 79 _SYSCALL_NOERROR(x,x) 80 81 #define SYSCALL(x) \ 82 _SYSCALL(x,x) 83 84 85 #define PSEUDO_NOERROR(x,y) \ 86 _SYSCALL_NOERROR(x,y); \ 87 mov r15, r14; \ 88 __END(x) 89 90 #define PSEUDO(x,y) \ 91 _SYSCALL(x,y); \ 92 mov r15, r14; \ 93 __END(x) 94 #define PSEUDO_HIDDEN(x,y) \ 95 _SYSCALL_HIDDEN(x,y); \ 96 mov r15, r14; \ 97 __END_HIDDEN(x) 98 99 100 #define RSYSCALL_NOERROR(x) \ 101 PSEUDO_NOERROR(x,x) 102 103 #define RSYSCALL(x) \ 104 PSEUDO(x,x) 105 #define RSYSCALL_HIDDEN(x) \ 106 PSEUDO_HIDDEN(x,x) 107 #define SYSCALL_END(x) \ 108 __END(x) 109 #define SYSCALL_END_HIDDEN(x) \ 110 __END_HIDDEN(x) 111 112 .globl CERROR 113